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Finding the Fourth Proportional to 103,114.20, 154,671.30 and 79,786.20

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Solution

The fourth proportional to 103,114.20, 154,671.30 and 79,786.20 is: 119,679.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,114.20 : 154,671.30 = 79,786.20 : x
  2. Step 2: Convert to fraction form
    103,114.20/154,671.30 = 79,786.20/x
  3. Step 3: Cross multiply
    103,114.20x = 154,671.30 × 79,786.20
  4. Step 4: Simplify right side
    103,114.20x = 12,340,635,276.06
  5. Step 5: Solve for x
    x = 12,340,635,276.06/103,114.20
  6. Step 6: Final answer
    x = 119,679.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.